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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
    div {
      width: 400px;
      height: 400px;
      background-color: pink;

      background-image: url(./images/1.png);

      /* 不平铺：盒子的左上角显示一张背景图 */
      background-repeat: no-repeat;
      /* background-repeat: repeat; */
      /* background-repeat: repeat-x; */
      /* background-repeat: repeat-y; */
      
    }
  </style>
</head>
<body>
    <div>div 标签</div>
</body>
</html>